Volume 135, Issue 7 e202214673
Forschungsartikel

Low-Frequency Sub-Terahertz Absorption in HgII−XCN−FeII (X=S, Se) Coordination Polymers

Guanping Li

Guanping Li

Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan

Contribution: Data curation (equal), Formal analysis (equal), ​Investigation (lead), Project administration (equal), Validation (equal), Visualization (lead), Writing - original draft (lead)

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Dr. Olaf Stefanczyk

Corresponding Author

Dr. Olaf Stefanczyk

Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan

Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (supporting), Funding acquisition (supporting), ​Investigation (supporting), Project administration (equal), Resources (supporting), Supervision (supporting), Validation (equal), Visualization (supporting), Writing - review & editing (equal)

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Dr. Kunal Kumar

Dr. Kunal Kumar

Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan

Contribution: Formal analysis (equal), Funding acquisition (supporting), ​Investigation (supporting), Project administration (supporting), Validation (supporting), Visualization (supporting), Writing - review & editing (supporting)

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Yuuki Mineo

Yuuki Mineo

Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan

Contribution: Formal analysis (supporting), ​Investigation (supporting), Visualization (supporting), Writing - review & editing (supporting)

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Dr. Koji Nakabayashi

Dr. Koji Nakabayashi

Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan

Contribution: Funding acquisition (supporting), ​Investigation (supporting), Supervision (supporting), Writing - review & editing (supporting)

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Prof. Dr. Shin-ichi Ohkoshi

Corresponding Author

Prof. Dr. Shin-ichi Ohkoshi

Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan

Contribution: Conceptualization (equal), Data curation (equal), Funding acquisition (lead), ​Investigation (supporting), Project administration (equal), Resources (lead), Supervision (lead), Visualization (supporting), Writing - review & editing (equal)

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First published: 15 December 2022

Abstract

Self-assembly FeII complexes of phenazine (Phen), quinoxaline (Qxn), and 4,4′-trimethylenedipyridine (Tmp) with tetrahedral building blocks of [HgII(XCN)4]2− (X=S or Se) formed six new high-dimensional frameworks with the general formula of [Fe(L)m][Hg(XCN)4]⋅solvents (L=Phen, m/X=2/S, 1; L=Qxn, m/X=2/S, 2; L=Qxn, m/X=1/S, 3; L=Qxn, m/X=1/Se, 3-Se; L=Tmp, m/X=1/S, 4; and L=Tmp, m/X=1/Se, 4-Se). 1, 3, and 3-Se show an intense sub-terahertz (sub-THz) absorbance of around 0.60 THz due to vibrations of the solvent molecules coordinated to the FeII ions and crystallization organic molecules. In addition, crystals of 1, 4, and 4-Se display low-frequency Raman scattering with exceptionally low values of 0.44, 0.51, and 0.53 THz, respectively. These results indicate that heavy metal FeII−HgII systems are promising platforms to construct sub-THz absorbers.

Conflict of interest

The authors declare no conflict of interest

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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